Sharp MD-MT821(GL), MD-MT821WBL, MD-MT821WGL Service Manual

MD-MT821/W

– 1 –

CONTENTS

Page

SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT821W ONLY)............................................................................ 2

SPECIFICATIONS ................................................................................................................................................................. 3

NAMES OF PARTS ............................................................................................................................................................... 4

OPERATION MANUAL .......................................................................................................................................................... 5

QUICK GUIDE (MD-MT821 ONLY) ....................................................................................................................................... 8

DISASSEMBLY.................................................................................................................................................................... 10

REMOVING AND REINSTALLING THE MAIN PARTS....................................................................................................... 11

ADJUSTMENT ...................................................................................................................................................................... 12

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 28

BLOCK DIAGRAM ............................................................................................................................................................... 29

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD................................................................................................... 30

WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 37

TROUBLE SHOOTING ........................................................................................................................................................ 38

FUNCTION TABLE OF IC.................................................................................................................................................... 41

PARTS GUIDE/EXPLODED VIEW PACKING OF THE SET (MD-MT821 ONLY)

SERVICE MANUAL

SHARP CORPORATION

No. S4913MDMT821/

This document has been published to be used for after sales service only. The contents are subject to change without notice.

• In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.

MD-MT821(GL) MD-MT821W(BL) MD-MT821W(GL)

Illustration: MD-MT821W

Illustration: MD-MT821

MD-MT821/W

– 2 –

Precaution to be taken when replacing and servicing the laser pickup. The following precautions must be observed during servicing to protect your eyesagainst exposure to the laser.

Warning of possible eye damage when repairing: If the AC adaptor or batteries are connected when the top houising (disc cover) of the unit is removed, and the PLAY key is pressed, the laser will light up during docus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will lesk from the opening btween the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you most not look at the laser durnd repaor. Before repaoring be sure to disconnect the AC adaptor and remove the batteries.

Figure 2-1 Figure 2-2

Magnet Head

Lasar Beam

Optical Pick-Up

Main PWB

Spindle motor

Mechanism Chassis

Precaution to be taken when replacing and servicing the Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the laser beam.

(1) When the cabinet has been removed, the power is

turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.

(2) The Laser Power Output of the Pickup inside the unit

and replacement service parts have already been adjusted prior to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup

Lens at any time.

(5) CAUTION - Use of controls or adjustments, or

performance of procedures other than those specified herein may result in hazardous radiation exposure.

SAFETY PRECAUTION FOR SERVICE MANUAL

(MD-MT821W ONLY)

CAUTION

Laser Diode Properties

● Material: GaAIAs

● Wavelength: 785 nm

● Pulse time:

Read mode; 0.8 mW Continuous Write mode; max. 10 mW 0.5S

min. cycle 1.5S

Repetition

● This Portable MiniDisc Recorder is classified as a CLASS 1 LASER product.

● The CLASS 1 LASER PRODUCT label is located on the bottom.

● Use the portable minidisc recorder only in accordance with the instructions given in

this manual and do not attempt to interfere with the interlock switch or make any other adjustment as this may result in exposure to hazardous radiation.

Magnet head

Optical pick-up

Top Cabinet

MD-MT821/W

– 3 –

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

General

Power source: DC 3.6 V : Rechargeable lithium-ion (MT821) battery x 1

DC 5 V : AC adaptor (AC 120V, 60 Hz) DC 3.4V: Battery case

(commercially available, "AA" size, alkaline battery x 1)

DC 4.5V: Separately available car

adaptor, AD-CA20X (for cars with a 12-24V DC negative ground electrical system)

Power source: DC 3.6 V : Rechargeable lithium-ion (MT821W) battery x 1

DC 5 V : AC adaptor

(AC 110 - 240V, 50/60 Hz)

DC 3.4V: Battery case

(commercially available, "AA" size, alkaline battery x 1)

DC 4.5V: Separately available car

adaptor, AD-CA20X (for cars with a 12-24V DC negative earth electrical system)

Power consumption: 7 W (AC adaptor) (MT821) Power consumption: 0.15A (AC adaptor) (MT821W) Output power: RMS; 20 mW (10 mW + 10mW)

(0.2% T.H.D.)

Charging time: Approx. 3 hours

(When using the AC adaptor included with the unit)

Battery life:

The continuous recording time is for analogue inputs when the volume level is set to "VOL 0". The continuous play time shows the value when the volume level is set to "VOL 15". The above values are the standard values when the unit is charged and used at an ambient temperature of 20

C. The operating time when using an alkaline battery may be different, depending on the type and manufacturer of the battery, and on the operating temperature.

Input sensitivity:

Output level: (MT821)

Output level: (MT821W)

Dimensions: Width: 3-1/4" (82.5 mm)

Height: 13/16" (20.7 mm) Depth: 3-1/16" (77.9 mm)

Weight: 0.39 lbs. (177 g) with rechargeable

battery

Input socket: Line/optical digital, microphone

(powered by the main unit)

Output socket: Headphones (impedance: 19 ohms)/ (MT821) remote control unit Output socket: Earphones (impedance: 32 ohms)/ (MT821W) remote control unit

MiniDisc Recorder

Type: Portable MiniDisc recorder Signal readout: Non-contact, 3-beam semi-conductor

laser pick-up

Audio channels: Stereo 2 channels/monaural (long-

play mode) 1 channel

Frequency response: 20 - 20,000 Hz (± 3 dB) Rotation speed: Approx. 400 - 900 rpm Error correction: ACIRC (Advanced Cross Interleave

Reed-Solomon Code)

Coding: ATRAC (Adaptive TRansform

Acoustic Coding), 24-bit computed type

Recording method: Magnetic modulation overwrite

method

Sampling frequency: 44.1 kHz (32 kHz and 48 kHz signals

are converted to 44.1 kHz, and then recorded.)

Wow and flutter: Unmeasurable (less than ±0.001%

W.peak)

SPECIFICATIONS

When using the rechargeable battery (fully charged) included with the unit

When using one, commercially available, high capacity, "AA" size, alkaline battery (in the battery case)

When using one, commercially available, high capacity, "AA" size battery with the rechargeable battery (fully charged)

Continuous recording:

Approx. 8 hours

Continuous recording:

Approx. 3 hours

Continuous recording:

Approx. 11 hours

Continuous play:

Approx. 11.5 hours

Continuous play:

Approx. 6.5 hours

Continuous play: Approx. 18 hours

Recording level

Reference input level

Input impedance

MIC H 0.25 mV 10 k ohms MIC L 2.5 mV 10 k ohms LINE 100 mV 20 k ohms

Specifications for this model are subject to change without prior notice

Headphones — 10 mW + 16 ohms

10 mW

LINE 250 mV — 10 k ohms

(-12dB)

Maximum

output level

Specified

output

Load

impedance

Earphones — 10 mW + 32 ohms

10 mW

LINE 250 mV — 10 k ohms

(-12dB)

Maximum

output level

Specified

output

Load

impedance

MD-MT821/W

– 4 –

NAMES OF PARTS

Remote control unit

1. Synchro Recording Indicator

2. Character/Time Information Indicator

3. Record Indicator

4. Repeat Indicator:

5. Random Indicator

6. Disc Mode Indicator

7. Total Track Number Indicator

8. Track Number Indicator

9. Battery Indicator:

10. Headphones Jack (MT821)

10. Earphones Socket (MT821W)

11. Display/Volume Shuttle Switch

12. Hold Switch

13. Play/Pause/Fast Reverse/ Fast Forward Shuttle Switch

14. Stop/Power Off/Bass/Play Mode Shuttle Switch

Main unit

1. Monaural Long-Play Mode Indicator

2. Record Indicator

3. Level Meter

4. Repeat Indicator:

5. TOC Indicator

6. Battery Indicator:

7. Random Indicator

8. Track Number Indicator

9. Character/Time Information Indicator

10. Synchro Recording Indicator

11. Disc Mode Indicator

12. Disc Name Indicator

13. Track Name Indicator

14. Remaining Recording Time Indicator

15. Total Track Number Indicator

16. Record/Track Mark Button

17. Mode Button

18. Bass/Delete Button

19. Enter/Fast Play/Synchro Button

20. Volume/Cursor Up Button: +

21. Volume/Cursor Down Button: -

22. Edit/Auto Mark/Time Mark Button

23. Display/Character Select Button

24. Fast Reverse/Fast Forward/Record-ing Level Control/ Name Select Shuttle Switch

25. Stop/Power Off Button: /:OFF

26. Play/Pause Button:

27. Open Lever

28. Headphones Jack (MT821)

28. Earphones Socket (MT821W)

29. Optical/Line Input Jack (MT821)

29. Optical/Line Input Socket (MT821W)

30. Handstrap Holder

31. Hold Switch

32. Battery Case Connection Terminals

33. Microphone Input Jack (MT821)

33. Microphone Input Socket (MT821W)

34. 5V DC Input Jack (MT821)

34. 5V DC Input Socket (MT821W)

35. Rechargeable Lithium-lon Battery Compartment

RANDOM

TOTAL

REC

SYNC

4 5

78 9

12345

6 7

8 9

10 11

12 13

1415

VOL

REC

17 18 19

25242322

27 28 30

MD-MT821/W

– 5 –

OPERATION MANUAL

POWER SOURCE

■ Rechargeable battery power

This unit can be used with 4 different power sources: a rechargeable battery, an AC

adaptor, a battery case, and a separately available car adaptor (AD-CA20X).

When the rechargeable battery is used for

the first time or when you want to use it af-

ter a long period of disuse, be sure to charge

it fully.

Open the rechargeable battery compart-

ment cover.

Insert the rechargeable battery.

● Insert the side with the arrow first.

Close the rechargeable battery compart-

ment cover.

Plug the AC adaptor into the AC soc ket,

and then insert the plug on the AC adap-

tor lead into the DC IN 5V socket.

● About 4 seconds later, “

” will

flash, and the battery will begin charg-

ing.

● Battery charging will be complete in

3.0 hours. When the charging is com-

plete, “

” will go out.

Notes:

● After charging has been completed, the

AC adaptor may be left connected.

(For example, when charging at night)

● If the rechargeable battery is in the unit,

it will be charged, even whilst operating

the unit. (Float charge)

● Do not force open the rechargeable bat-

tery cover too wide.

● When the AC adaptor plug is inserted

and a MiniDisc has already been in-

serted, playback may start automatically .

In this case, press the ■ / :OFF button

twice to turn the power off.

OPEN

Mark

AC 110-240V, 50/60 Hz

To the DC IN 5V socket

Insert securely, all the

way in.

CONVENIENT OPERATION OF THE UNIT

■ Checking the remaining amount

of battery charge

The remaining amount of battery charge

is shown by the battery indicator (

)

during operation.

< How to read the battery indicator >

● When the battery is completely discharged,

the whole battery indicator will flash. Re-

charge the battery or replace the alkaline

battery with a new one.

● When the battery has run completely out,

“BATT EMPTY” (main unit) and “Lo BATT”

(remote control unit) will appear. Then, the

power will be disconnected automatically.

Notes:

● When using the unit with an alkaline bat-

tery or a rechargeable battery, the battery

indicator will not correctly display the remain-

ing capacity for approximately 20 seconds

after the power has been turned on.

● When the AC adaptor included with this unit

or a separately available car adaptor is

used, the battery indicator will not be shown.

● The number of bars shown in the battery

indicator may increase or decrease, de-

pending on the operation being performed.

This is normal.

● When the rechargeable battery and the al-

kaline battery are used at the same time,

the rechargeable battery is used first, then

the alkaline battery.

Since the battery indicator shows the re-

maining amount of the particular battery

being used, the number of bars will in-

crease when the unit switches to the al-

kaline battery.

Battery indicator

When the battery needs charging, it is

impossible to start recording or editing.

When the battery is

completely charged

Charging is

needed.

RECORDING USING THE OPTICAL DIGITAL CABLE

There are cases where digital

recording may be impossible.

In the following cases digital recording is

impossible, even if you are using digital

cables.

When you attempt to make a new digital

recording from a track that was digitally re-

corded on a MiniDisc.

● MiniDiscs are designed so that only first

generation digital copies can be made.

Further digital copies are prevented by

the SCMS (Serial Copy Management

System).

Playback

Digital cable

CD player, MD

player, etc.

Digitally recorded MiniDisc

Analogue recording is

possible.

Recording

Playback

Digital cable

Recording

MD-MT821/W

– 6 –

Many potential “problems” can be resolved by the owner without calling a service techni-

cian.

If something seems to be wrong with this product, check the following before calling your

authorised SHARP dealer or service centre.

PROBLEM CAUSE

The unit does not turn

on.

● Is the AC adaptor disconnected?

● Is the battery exhausted?

● Is the unit in the hold mode?

● Has condensation formed inside the unit?

● Is the unit being influenced by mechanical shock or by

static electricity?

● Is the volume set too low?

● Is the remote control unit or the earphones plugged in?

● Are you trying to play a MiniDisc with data on it instead

of a MiniDisc containing music?

● Is the unit in the hold mode?

● Is the battery exhausted?

● Is the remote control unit plug or the earphone plug in-

serted firmly?

● Is the battery exhausted?

● Is the unit being subjected to excessive vibration?

● Has the track number or character information been

written on the disc yet?

● Is the unit in the recording or editing mode?

● Is the MiniDisc protected against accidental erasure?

● Is the unit connected properly to the other equipment?

● Is the AC adaptor unplugged or did a power failure

occur whilst recording or editing?

● Is the unit in the hold mode?

● Is an optical signal being output from the external

equipment?

Read the operation manual for the external equipment.

No sound is heard from

the earphones.

When the operation

buttons are pressed, the

unit does not respond.

Some sounds are

skipped.

The MiniDisc cannot be

ejected.

Recording and editing

are impossible.

■ If trouble occurs

When this product is subjected to strong

external interference (mechanical shock,

excessive static electricity, abnor mal sup-

ply voltage due to lightning, etc.) or if it is

operated incorrectly, it may malfunction. If

such a problem occurs, do the following:

1. Unplug the AC adaptor from the AC

socket.

2. Remove the battery.

3. Leave the unit completely unpowered for

approximately 30 seconds.

4. Plug the AC adaptor back into the AC

socket and retry the operation.

If strange sounds, smell or smoke come out

of the unit or an object is dropped into the

unit, remove the AC adaptor from the AC

socket immediately and contact an

authorised SHARP service centre.

TROUBLESHOOTING

■ Moisture condensation

In the following cases, condensation

may form inside the unit.

● Shortly after turning on a heater.

● When the unit is placed in a room where

there is excessive steam or moisture.

● When the unit is moved from a cool

place to a warm place.

When the unit has condensation

inside, the disc signals cannot be

read, and the unit may not function

properly.

● If this happens, remove the disc.

The condensation should evaporate in

approximately 1 hour. The unit will then

function properly.

When the number of tracks used

reaches the limit, regardless of the

remaining recording time, further

recording will be impossible.

(Maximum number of tracks: 255)

If a MiniDisc has been recorded or

edited repeatedly or if a MiniDisc has

scratches on it, it may not be possible

to record the maximum number of

tracks on it.

If there are scratches on a disc, the unit

will automatically avoid recording in

those areas. The recording time will be

reduced.

When the remaining recording time of

a disc is displayed, short tracks less

than 12 seconds long may not be

included in the total.

For MiniDiscs on which repeated

recording and editing operations were

performed, the COMBINE function

may not work.

A cluster (about 2 seconds) is normally

the minimum unit of recording. So, even

if a track is less than 2 seconds long, it

will use about 2 seconds of space on the

disc.

Therefore, the time actually available for

recording may be less than the

remaining time displayed.

If there are scratches on discs, those

sections will be automatically avoided

(no recording will be placed in those

sections). Therefore, the recording time

will be reduced.

For MiniDiscs on which repeated

recording and editing were performed,

some sounds may be skipped whilst

cueing and reviewing.

If there are scratches or dust on a

MiniDisc, the track numbers following

that track will be increased by one.

MINIDISC SYSTEM LIMITATIONS

MiniDiscs are recorded using a different system than is used for cassette tapes or DAT

recordings. Therefore, the following conditions may be encountered, depending on how

the disc has been recorded or edited. These are due to system limitations, and should be

considered normal.

Even if the maximum recording

time of a MiniDisc has not been

reached, “DISC FULL” or “TOC

FULL” may be displayed.

Even if the number of tracks and

the recording time have not

reached the limit, “DISC FULL”

may be displayed.

Even if several short tracks are

erased, the remaining recording

time may not show an increase.

Two tracks may not be combined

in editing.

The total of the recorded time and

time remaining on a disc may not

add up to the maximum possible

recording time.

When recorded tracks are played

back using the cue and review op-

erations, some sounds may be

skipped.

A track number can be created in

the middle of a track.

MD-MT821/W

– 7 –

● The battery run down.

● Nothing is recorded.

● No copy can be made because of the

SCMS copyright system.

● A track cannot be edited.

● Recording cannot be performed

correctly due to vibration or shock in

the unit.

● Editing is impossible.

● The disc is scratched.

● Poor connection of the digital cable.

● The disc is out of recording space.

● The unit is in the hold mode.

● The EJECT lever was moved during

recording or editing.

● A disc has not been loaded.

● You tried to record on a playback- only

disc.

● Improper power is being supplied.

● The MD is write protected.

● You tried to record without loading an

MD.

● A playback-only MD was loaded and

the REC button was pressed when the

power was off.

● The disc is damaged.

● Since a track number is currently being

located or written to, the unit cannot

accept your command.

● You have come to the conclusion that

the unit is out of order.

● The temperature is too high.

● A large portion of the disc has been

damaged.

● There is no space left for recording

character information (track names,

disc names, etc.).

● The track has been protected from

being erased.

● A large portion of the disc has been

damaged.

● There is an error in the recorded signal.

● A disc which contains data other than

music was played.

● There is an error in the signal from the

disc.

● Charge the rechargeable battery or

replace the alkaline battery (or use the

AC adaptor for power).

● Replace the disc with a recorded disc.

● Record using the analog cable.

● Change the stop position of the track

and then try editing it.

● Re-record or replace it with another

recordable disc.

● Check the number of tracks.

● If the sound you hear is not right, try

recording again.

● Replace the disc with another

recordable disc.

● Connect the digital cable securely.

● Replace it with another recordable disc.

● Return the HOLD switch to its original

position.

● Turn off the power and remove the

MiniDisc.

● Load a disc.

● Replace it with a recordable disc.

● Use one of the specified power

sources.

● Move the write protection knob back to

its original position.

● Load a recordable MD.

● Replace it with a recordable MD.

● Reload the disc or replace it.

● Replace it with another recorded disc.

● Wait for a while and try the operation

again.

● To have it repaired, go to the distributor

where you purchased the unit.

● Turn off the power, and wait for a while.

● Replace it with another recorded disc.

● Replace it with another recordable disc.

● Edit the track with the device on which

it was recorded.

● Replace it with another recorded disc.

● Erase all of the signal errors, and then

try recording again.

● A disc which contains non-music data

cannot be played.

● Replace it with another recorded disc.

ERROR MESSAGES

( ): Error messages seen on the remote control.

Error messages Remedy

BATT EMPTY

(Lo BATT)

BLANK DISC

(BLANK)

Can’t COPY

(Not REC)

Can’t EDIT

Can’t REC

(Not REC)

Can’t WRITE

DEFECT

(DEFECT)

Din UNLOCK

(UNLOCK)

READ ERROR

(E-READ)

DISC FULL

HOLD

(HOLD)

LOCKED

LOCK ERROR

NO DISC

PB DISC

POWER ?

SORRY

(SORRY)

SYSTEM ERR

(E-SYS)

TEMP OVER

(E-TEMP)

TOC ERROR

(E-TOC)

TOC FULL

Tr. Protect

U TOC ERROR

(E-UTOC)

? DISC

(?DISC)

Meaning

PROTECTED

MD-MT821/W

– 8 –

QUICK GUIDE (MD-MT821 ONLY)

Check the supplied accessories /

Compruebe los accesorios suministrados

RELEASE LOCK

Power source /

Alimentación

PORTABLE MINIDISC RECORDER

Quick Guide/Guía rápida

MD-MT821

● Handstrap x 1

●

Correa para la

muñeca x 1

● Carrying Bag x 1

●

Caja para el

transporte x 1

● Analog Cable x 1

●

Cable analógico x 1

● Optical Digital Cable

x 1

●

Cable óptico digital x

● Battery Case x 1

●

Caja de la pila x 1

● AC Adaptor x 1

●

Adaptador de CA x 1

● Headphones x 1

●

Auriculares x 1

● Remote Control Unit

x 1

●

Controlador remoto

x 1

● Rechargeable

Lithium-Ion Battery x 1

●

Batería recargable de

litio-ion x 1

■ Rechargeable battery power

■

Alimentación de la batería recargable

• AC 120V,

60Hz

•

120V CA,

60Hz

■ Alkaline battery power

■

Alimentación de la pila alcalina

● Make sure that a fully charged

rechargeable battery is inserted.

● Do not use the unit if it only has an

alkaline battery in it.

• Back of the MD recorder

•

Parte posterior de la

grabadora de MD

■AC power

■

Alimentación de CA

Open.

Abrir.

Press.

Pulsar.

• AC 120V, 60Hz

•

120V CA, 60Hz

OPEN

Printed in Japan

Impreso en Japón

●

Asegúrese de que se ha insertado una

batería completamente cargada.

●

No emplee el aparato si sólo tiene una

pila alcalina instalada.

Mark

Marca

Connection /

Conexión

■ Analog recording

■

Grabación analógica

■ Digital recording

■

Grabación digital

■ Microphone

■

Micrófono

Stereo microphone

Micrófono estéreo

Recording side

Lado de grabación

MIC IN

PLUG IN

POWER

OPTICAL/

LINE IN

• To the line output jacks

on a stereo

•

A los enchufes de

salida de línea de un

equipo estéreo

(RIGHT)

(DERECHO)

• Analog cable included with this unit

•

Cable analógico suministrado con este

(LEFT)

(IZQUIERDO)

Playback side

Lado de reproducción

Recording side

Lado de grabación

OPTICAL/

LINE IN

• Optical digital cable

(supplied)

•

Cable óptico digital

(suministrado)

Playback side

Lado de reproducción

Recording side

Lado de grabación

DIGITAL OUT

MD-MT821/W

– 9 –

REC

Recording /

Grabación

After recording:

Después de la grabación:

To remove the MiniDisc:

Para extraer el minidisco:

Turn off the power and move

the OPEN lever in the direction

indicated by the arrow.

Desconecte la alimentación y

mueva la palanca OPEN en el

sentido indicado por la flecha.

Press the ENTER/SYNC button.

Pulse el botón ENTER/SYNC.

Begin playback on the source equipment.

Inicie la reproducción en el equipo fuente.

Press the ● REC button.

Pulse el botón

●

REC.

When a noise, such as a person speaking, is

picked up by the microphone, recording will

begin automatically.

Connect the stereo microphone to

the MIC IN jack.

Insert a recordable MiniDisc.

Inserte un minidisco grabable.

■ Recording from CDs or MDs (Synchro recording)

■

Grabación de discos compactos o minidiscos (Grabación sincronizada)

■ Recording from the microphone (Mic synchro recording)

■

Grabación de un micrófono (Grabación sincronizada con micrófono)

Press the ENTER/SYNC button to select the

synchro recording level. (This level can be

changed, even while recording.)

Press the ■/:OFF button while in the stop mode.

Pulse el botón

■

/:OFF estando en el modo de parada.

Connect the external equipment.

Conecte el equipo externo.

Insert a recordable MiniDisc.

Inserte un minidisco grabable.

Press the ● REC button.

Pulse el botón

●

REC.

While playing sound from the external

equipment connected to this unit, move the

shuttle switch up or down to adjust the

recording level.

Press the ■/:OFF button.

Pulse el botón

■

/:OFF.

To stop recording:

Para detener la grabación:

Mientras se reproduce el sonido del equipo

externo conectado a este aparato, mueva el

selector de mando de lanzadera hacia arriba o

abajo para ajustar el nivel de grabación.

Conecte el micrófono estéreo al

enchufe MIC IN del aparato principal.

Mueva el selector de mando de lanzadera hacia

arriba o abajo para ajustar el nivel de grabación.

Move the shuttle switch up or down to adjust

the recording level.

Pulse el botón ENTER/SYNC para seleccionar el

nivel de la grabación sincronizada. (Este nivel

podrá cambiarse incluso durante la grabación.)

Cuando el micrófono capte un ruido, el de una

persona que hable por ejemplo, la grabación

empezará automáticamente.

Playing a MiniDisc /

Reproducción de un minidisco

REMOTE

Insert the headphones plug firmly into the

headphones jack on the remote control unit.

Plug the remote control unit into the

jack

on the main unit. Push the plug all the way in.

● The power will be turned on automatically, and

playback will start from the first track.

(Auto-play function)

●

La alimentación se conectará automáticamente, y

la reproducción empezará desde la primera pista.

(Función de reproducción automática)

Load a MiniDisc in the direction indicated

by the arrow on the MiniDisc, with the label

side facing up.

To interrupt playback:

Para interrumpir la reproducción:

Press the 06 button during playback.

● To resume playback, press the 06 button again.

Pulse el botón

durante la reproducción.

●

Para reanudar la reproducción, pulse de nuevo el botón

To turn off the power:

Para desconectar la alimentación:

Press the 06 button.

In the following cases, the auto-play function will not work.

● When the recordable MiniDisc write protection tab is

closed

● When the auto-play function has been canceled

Playback does not start when a MiniDisc is inserted:

La reproducción no empieza cuando se inserta un

minidisco:

Sound control /

Control del sonido

Adjust the bass level.

Each time the BASS button is pressed, the tone will be

switched as follows:

• Volume (0 - 30)

•

Volumen (0 - 30)

To stop playback:

Para detener la reproducción:

Press the ■/:OFF button.

Pulse el botón

■

/:OFF.

Press the ■/:OFF button while in the stop mode.

Pulse el botón

■ /

:OFF estando en el modo de parada.

Ajuste el volumen.

Desde el aparato principal:

Pulse el botón + para aumentar el volumen y el botón –

para reducirlo.

Desde el controlador remoto:

Mueva el selector de mando de lanzadera una vez hacia

arriba para aumentar el volumen, y muévalo hacia abajo

para reducirlo.

Adjust the volume.

From the main unit:

Press the + button to increase the volume and the –

button to decrease the volume.

From the remote control unit:

Move the shuttle switch up once to increase the volume,

and move it down once to decrease the volume.

BASS 1 -------Bass sounds are emphasized slightly.

BASS 2 ------- Bass sounds are emphasized more.

BASS 3 ------- Bass sounds are emphasized even more.

BASS OFF ---- Bass emphasiz is canceled.

BASS 1 -------

Los sonidos graves se realzan ligeramente.

BASS 2 -------

Los sonidos graves se realzan más.

BASS 3 -------

Los sonidos graves se realzan aún más.

BASS OFF ----

El realce de los graves se cancela.

Inserte firmemente la clavija de los auriculares

en el enchufe de auriculares del controlador

remoto.

Enchufe el controlador remoto en el enchufe

del aparato principal. Empuje completamente

hacia adentro la clavija.

Cargue un minidisco en el sentido indicado

por la flecha del minidisco, con el lado de la

etiqueta hacia arriba.

Pulse el botón

06 .

En los casos siguientes, la función de reproducción

automática no se activará.

●

Cuando esté cerrada la lengüeta de protección contra

escritura del minidisco grabable

●

Cuando haya sido cancelada la función de reproducción

automática

Ajuste el nivel de los graves.

Cada vez que pulse el botón BASS, el tono cambiará de

la forma siguiente:

MD-MT821/W

– 10 –

1 Bottom Lid 1. Screw ..................... (A1) x5 10-1

2 Top Cabinet 1. Open the disc lid 10-1

2. Screw .....................(B1) x4

3. Flexible PWB..........(B2) x2 10-3

3 Center Cabinet A 1. Hook ...................... (C1) x2 10-2

4 Center Cabinet B 1.

Remove in the arrow direction.

10-2

5 Main PWB 1. Flexible PWB ......... (D1) x2 10-3

2. Soldering ............... (D2) x2

3. Screw .................... (D3) x1

6 Mechanism Unit

1. Raise the rear part, and remove

10-4

in the arrow direction.

DISASSEMBLY

Cares before disassembling

When assembling the machine after disassembling or

repair, observe the following requirements so as to ensure safety and performance.

1. Remove the batteries from the machine, and take out the mini-disc.

2. When assembling after repair, be sure to restore the initial location of wires. Since the screws are small, incorrect fixing may result in malfunction.

3. When repairing, pay utmost attention to static electricity of IC.

REMOVAL

PROCEDURE

STEP

FIGURE

Figu re 10-1

Figure 10-2

Figure 10-3

Caution:

Carefully handle the main PWB and flexible PWB. After removing the flexible PWB (*1) for the optical pickup from the connector, do not touch directly the front end of flexible PWB with your hand so as to prevent damage of optical pickup by static electricity.

Figure 10-4

(B1)x2 ø1.4x2mm

(A1)x2 ø1.4x2mm

(A1)x1 ø1.4x2mm

Bottom Lid

OPEN Lever

Top Cabinet

Center Cabinet A

Center Cabinet B

Push down the lever of center chassis outwards , and move the mechanism unit to remove it.

Precision Driver

(C1)x2

Remove the hook

(D3)x1 ø1.7x2.5mm

(D2)x3

Pull

Main PWB

(B2)x2

(D1)x1

(D2)x1

Pull

Put the fold on the connector, and apply with the felt. Sagging may result in contact with the sheet metal.

Felt

(D1)x*1 Flexible PWB for optical pickup

Mechanism Unit

OPEN

Note

Open or close the battery cover as shown below.

To open

T o close

1 2

Do not force open the battery cover too wide.

Do not raise the battery cover upward.

Slide the battery cover. Open it.

Raise the battery cover. Slide it to close.

MD-MT821/W

– 11 –

REMOVING AND REINSTALLING THE MAIN PARTS

Remove the mechanism according to the disassembling methods 1 to 6. (See Page 10.)

How to remove the spindle motor (See Fig. 11-1.)

1. Remove the solder joint (A1) x 1 of flexible PWB.

2. Remove the screws (A2) x 3 pcs., and remove the spindle motor.

Figure 11-5

Figure 11-1

Figure 11-2

Figure 11-3

How to reinstall the optical pickup unit (See Fig. 11-5.)

1. Remove the screw (E1) x 1 pc.

2. Slowly raise the optical pickup.

How to remove the magnetic head (See Fig. 11-4.)

1. Remove the screws (D1) x4 which connects the magnetic

head to the head relay flexible PWB, remove the spring washers (D2) x 2 and remove the soldering joints (D3) x 2.

Note:

Mount carefully so as not to damage the magnetic head. (If the gear is damaged, noise is caused.)

Figure 11-4

How to remove the lift motor (See Fig. 11-2.)

1. Remove the solder joint (B1) x 2 of lift motor lead wire.

2. Remove the screw (B2) x 1 pc., and remove the flexible PWB.

3. Remove the screw (B3) x 1 pc., and remove the lift motor.

Note:

Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.)

How to remove the sled motor (See Fig. 11-3.)

1. Remove the stop washer (C1) x 1 pc., and remove the drive

gear (C2) x 1 pc.

2. Remove the screws (C3) x 2 pcs., and remove the sled

motor.

3. Remove the solder joints (C4) x 2 of flexible PWB.

Note:

Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.)

(A2)x3 ø1.4x2.8mm

MD Mechanism

Spindle Motor

Mechanism Flexible PWB Solder joint (A1)x1

(B2)x1 ø1.4x1.5mm

(B3)x1 ø1.4x5.5mm

MD Mechanism

Remove the solder joint (B1)x2

Lift Motor

Stop Washer

(C1)x1

MD Mechanism

Sled Motor

(C3)x2 ø1.4x1.2mm

Drive Gear

(C2)x1

Mechanism Flexible PWB

Solder Joint (C4)x2

Solder joint (D3)x2

(D1)x1 ø1.4x1.5mm

(D1)x1 ø1.2x1.6mm

(D1)x2 ø1.4x2.2mm

Magnetic Head

MD Mechanism

Spring Washer (D2)x2

(E1)x1 ø1.7x3mm

Shft

Pickup Unit

MD Mechanism

MD-MT821/W

– 12 –

Entering the TEST mode

1. Setting at port (in standby state, disc-free state or power nonconnected state)

(1) Set the port as follows. TEST1 : "Low" TEST0 : "High" (2) Press the PLAY button in the standby state (it is allowed to insert the disc or to connect the power supply). (3) Test Mode STOP [ T E S T _ ]

2. Setting by special button operation (in standby state)

(1) Holding down the DISP button and ENTER button, press the PLAY button. (2) Normal mode setting initialization (BASS setting, VOL setting, etc.) *Since the unit is changed to the setting for production line inspection , be sure to set it to the default setting state in the following default setting procedure before returning it to the user. (3) Indication of microcomputer version for one second [ X X X X X X ]

(4) Whole LCD lighting for 2 seconds (5) Test Mode STOP [ T E S T _ ] *When the PLAY button is pressed during indication (3) and (4), the process proceeds to (5).

1 High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110 2 Low reflection disc MMD-212 (TEAC Test MD) 88GMMD-212 3 Low reflection disc Recording minidisc UDSKM0001AFZZ

ADJUSTMENT

Test disc

MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high reflection disc).

Type

Test disc Parts No.

Note: Use the low reflection disc on which music has been recorded.

EEPROM version

Destination

Leaving the TEST mode

(1) Press the STOP button in the TEST mode stop state or version indicating state or whole LCD lighting state. (2) EEPROM rewrite-enable area updating, adjustment error setting . (3) Change to standby state

Test Mode

Microcomputer version

Shipping setting method

Holding down simultaneously the VOLUME-DOWN Button and PLAY Button of the set unit without disc, supply the power from the DC IN plug. After the indication "INIT" -> "BYE OK" disappears, release the power supply of DC IN.

1. AUTO 1 Mode • Perform preliminary automatic adjustment.

• If the combination of mechanism and pickup PWB has been changed, be sure to start from

AUTO1.

2. AUTO 2 Mode

• Perform ATT (attenuator) automatic adjustment.

• Perform continuous playback (error rate display, jump test)

3. TEST-PLAY Mode

• Continuous playback from the specified address is performed.

• 1 line, 10 lines or 384 lines manual jump is performed.

• C1 error rate display (pit section), ADIP error rate display (groove section)

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous playback.

4. TEST-REC Mode

• Continuous record from the specified address is performed.

• Change of record laser output(servo gain is also changed according to laser output).

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous recording.

5. MANUAL 1 Mode

• Temperature is displayed. (Updating in real time)

• Seeing the displayed adjustment value, perform

preliminary manual adjustment. (Error rate indication, jump test)

6. MANUAL 2 Mode

• Temperature is displayed. (Updating in real time)

• Seeing the displayed adjustment value perform manfully the preliminary adjustment.

(Error rate indication, jump test)

• Continuous playback is performed

(error rate display, jump test).

7. RESULT 1 Mode

• The value adjusted in AUTO1 or MANUAL1 is indicated.

• (Execution in servo "OFF" state").

8. RESULT 2 Mode

• The value adjusted in AUTO 2 or MANUAL 2 is indicated.

• Adjustment value is changed manually. (error rate display, jump test).

9. DIGITAL INPUT Mode

• Digital input information is displayed.

10. ERROR INFORMATION

• Error information is displayed.

Mode • Error information is initialized

11. NORMAL Mode

• The mode is changed from the TEST mode to the normal mode without adjustment.

• In the normal mode the internal operation mode, memory capacity, etc. areindicated.

• In the normal mode both temperature correction and posture correction are perfomed.

12. EEPROM Mode

• Factors of digital servo are changed manually. (Each servo is turned on individually.)

• Cut-off frequency of BASS1, BASS2 and BASS3 is selected manually.

• Temperature detection terminal voltage is measured, and the reference value is set.

• Defaults are selected and set.

• Setting of EEPROM protect area is updated. (In case of protect releasing)

13. INNER Mode

• Determine the position where the INNER switch is turned on. (only high reflection disc).

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed.

MD-MT821/W

– 13 –

Operation in each TEST mode

1. AUTO1 Mode

• When the STOP button is pressed while the AUTO1 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output.

• Be sure to adjust, using the specified disc MMD-212.

At this time release the EEPROM (IC402) protection. (Refer to EEPROM write procedure.)

• Adjustment NG; Adjustment item out of range, focus ON failure, and adjustment error

• When the PLAY button is pressed while ADJ. OK is displayed, AUTO2 is executed.

2. AUTO2 Mode

• When the STOP button is pressed while the AUTO2 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output.

• Adjustment NG; Adjustment item out of range, and adjustment error.

• When the PLAY button is pressed while ADJ. OK is displayed,TEST_PLAY is executed.

3. MANUAL1 Mode

• Adjustment item to be made in AUTO1 mode is performed manually.

• When the VOL UP button is pressed during adjustment, the setting increases, and the new setting is output.

• If the VOL DOWN button is pressed during adjustment, the setting decreases and the new setting is output.

• If the VOL UP/DOWN button is held down, the setting changes continuously with 100 ms cycle.

*In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button.

• If the setting is within the allowable range, the RANDOM display lights.

• When the STOP button is pressed during MANUAL1 MENU or measurement or adjustment, the state is changed to the TEST mode stop state.

4. MANUAL2 Mode

• Adjustment item to be made in AUTO2 mode is performed manually.

• When the VOL UP button is pressed during adjustment, the setting increases, and the new setting is output.

• If the VOL DOWN button is pressed during adjustment, the setting decreases and the new setting is output.

• If the VOL UP/DOWN button is held down, the setting changes continuously with 100 ms cycle.

*In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button.

• If the setting is within the allowable range, the RANDOM display lights.

• When the STOP button is pressed during MANUAL2 MENU or measurement or adjustment, the state is changed to the TEST mode stop state.

• When the PLAY button is pressed in B-ATT set state, the mode is changed to the continuous playback mode.

• As for operation during continuous playback refer to "TEST-PLAY mode explanation".

5. RESULT1 Mode

• The measurement value and set value of adjustment items for AUTO1 and MANUAL 1 are displayed.

• If the VOL UP button is pressed during setting indication, the setting increases. If the VOL DOWN button is pressed, the setting reduces.

And then the new setting is stored in the RAM.

• When the VOL UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

*In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button.

• If the STOP button is pressed during RESULT1 menu or measurement value indication or set value indication, the state is changed to the TEST mode STOP state.

6. RESULT2 Mode

• The measurement value and set value of adjustment items for AUTO2 and MANUAL 2 are displayed.

• If the VOL UP button is pressed during setting indication, the setting increases. If the VOL DOWN button is pressed, the setting reduces.

And then the new setting is stored in the RAM.

• When the VOL UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

*In this operation, the setting change is performed for each digit. The digit is changed by pressing the MODE button.

• If the STOP button is pressed during RESULT2 menu or measurement value indication or set value indication, the state is changed to the TEST mode STOP state.

7. TEST-PLAY Mode

• When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode changes to the TEST mode stop state.

• When the PLAY button is pressed while the TEST-PLAY menu appears,continuous playback is initiated from the current pickup position.

• Whenever the DISP button is pressed in the TEST-PLAY menu, the target address changes as follows.

0050 — 03C0 — 0700 — 08A0 — 0950— 0050 —

When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address.

• Each time the MODE button is pressed while the TEST-PLAY mode target address is displayed, the digit which is changed by pressing the SKIP UP/DOWN button is changed as follows.

005

0 — 0050 — 0050 — 0050 —

• When the SKIP UP button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to +1h. (0 to F)

• When the SKIP DOWN button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to -1h. (0 to F) * When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

• When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows.

1 — 10 — 384 — 1

* After the number of jump lines is indicated for one second, the address indication is restored. [ T R _ ]

MD-MT821/W

– 14 –

• When the SKIP UP button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction.

• When the SKIP DOWN button is pressed in the continuous playback mode, the specified number of lines is jumped in the REV direction. * When the SKIP UP/DOWN button is held down, jump is repeated every approx. 100 ms.

•Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows. * Pre-mastered disc

Continuous playback (SUBQ address indication) [ S Q ]

Continuous playback (C1 error indication) [ C E ]

Continuous playback (SUBQ address indication) [ S Q ]

* Recordabl disk

Continuous playback (ADIP address indication) [ A P ]

Continuous playback (C1 error indication) [ C E ]

Continuous playback (ADIP error indication) [ A E ]

Continuous playback (ADIP address indication) [ A P ]

8. TEST-REC Mode

• When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode changes to the TEST mode stop state.

• When the PLAY button is pressed while the TEST-REC menu appears, the continuous record is initiated from the current pickup position.

• Whenever the DISP button is pressed in the TEST-REC menu, the target address changes as follows.

0032 — 03C0 — 0700 — 08A0 —0950 — 0032 —

When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address.

• Whenever the MODE button is pressed in the TEST-REC mode target address is displayed, the digit which is changed by the SKIP UP/

DOWN button changes as follows.

0032 — 0032 — 0032 — 0320 —

• When the SKIP UP button s pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASS button is set to +1h.(0 to F)

• When the SKIP DOWN button is pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASS button is set to -1h. (0 to F)

* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

• When the VOL UP/DOWN button is pressed in the TEST-REC mode or continuous record mode, the laser record power changes. (Servo gain changes also according to record power.) * After the laser record power is indicated for one second, the address indication is restored.

[ R P W _ ]

• : Address

• : Laser power cord

• Operation is disabled if the premastered disc or disc is in miserase-protected state.

9. NORMAL Mode

• When the STOP button is pressed while the NORMAL menu appears, the mode changes to the TEST mode stop state.

• Indication during operation Indication of memory capacity on main unit LCD [ ] + Level meter

: Internal mode : Address (Cluster section) : Address (Sector section)

• Selection of sound volume, BASS, etc. is possible (without indication)

• Recording is also possible.

• If the STOP button is pressed during operation in the NORMAL mode, the NORMAL mode is canceled, and the power is turned off.

10. Digital input display Mode (Din Mon)

• When the STOP button is pressed while the digital input indication menu appears or during digital input information indication, the mode changes to the TEST mode stop state.

• In case of analog input or digital input unlocking the indication data is _.

11. Error data display Mode

• Reversing when SKIP DOWN button is pressed

• When the STOP button is pressed while the error data indication menu appears or during error data indication, the mode changes to the TEST mode stop state.

• Error data 0 is the latest error.

• Error which occurred in the TEST mode is also stored in the memory.

• When the DISP button is pressed while the error data indication menu appears, the error data is initialized. [ C L E A R _ ]

•

: Error Code

Explanation of error history code

12h : RF side FG, TG, and TCRS adjustment termination failure 13h : Adjustment servo retraction excessive retrial 16h : C. IN detection time-over 17h : A, B, E, F, and TCRSO offset measurement value out of

tolerable range

21h : Focus retraction completion allowable time-over 23h : Track search completion allowable time-over 24h : Disc linear speed measurement failure 32h : P-TOC read failure 42h : U-TOC read failure

MD-MT821/W

– 15 –

EEPROM (IC402) writing procedure

1. Procedure to replace EEPROM and write initial value of microcomputer in EEPROM

(1) Replace EEPROM. (2) Deprive EEPROM of protection (connect the pins 8 and 6 of IC402). (3) Refer to the latest EEPROM data list. (4) Press the Display/Lower-case Character button, Enter/Synchro button and Play/Pause button to start the test mode. (5) Version display

[ V e r . ]

EEPROM version (C ~ Z)

Microcomputer ROM version (6) The whole LCD lights. (7) Test mode stop state.

[ T E S T ]

(8) Press the "BASS" button, and press twice the "SKIP DOWN" button.

[ E E P R O M ]

(9) Perform the operation to display "EEPROM SETTING MODE CHART", compare the EEPROM DATA LIST with the display,

and set according to the EEPROM DATA LIST with the VOL UP or VOL DOWN key.

(10)

Set the temperature reference. (Refer to the Temperature Reference Setting Method.)

(11)

Set according to the EEPROM DATA LIST.

(12)

Press the Stop button.

[ T E S T ]

(13)

Press the Stop button.

(14)

After data is written in EEPROM, turn off power .

(15)

Restore protection of EEPROM (Disconnect connection made in Step (2) above).

2. Temperature reference setting method

[1] Measurement, calculation and setting procedure

(1) Set the TEST mode.

• Set TEST 1, 0 = '01', and turn on power (or set PLAY ON in standby state). (2) Start the EEPROM mode 'Temp' menu.

• Key operation in order of BASS, SKIP-DOWN x 2 times, PLAY, PLAY in the test mode STOP state.

• 'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference) (3) Once press SKIP-UP, and determine the displayed microcomputer TEMP input AD value.

• 'TPin##' is displayed. (## = TEMP input AD value) (4) At the ambient temperature, determine the temperature corrected value from the temperature measurement value

correction table.

(5) Determine the temperature reference, using the following formula.

• Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value (6) Set the temperature reference value by button operation , and check whether the temperature code indication corresponds to "Temperature

Code Identification Table".

[2] Temperature measurement value correction table

Ambient

temperature

Temperature

correction

+ 9oC ~ +11oC - 05h + 10.0oC +12oC ~ +14oC - 04h + 12.7oC +15oC ~ +16oC - 03h + 15.4oC +17oC ~ +19oC - 02h + 18.2oC +20oC ~ +22oC - 01h + 20.9oC +23oC ~ +24oC ± 00h + 23.6oC +25oC ~ +27oC + 01h + 26.3oC +28oC ~ +30oC + 02h + 29.0oC +31oC ~ +33oC + 03h + 31.8oC

12. INNER Mode

• when the STOP button is pressed on the INNER menu (SQ______ ), the state is changed to the TEST mode STOP state.

• : Address

Center

temperature

Ambient

temperature

Temperature

correction

Center

temperature

- 9oC ~ +10oC 08h + 0.5oC

+ 3oC ~ +21oC 07h + 12.5oC +15oC ~ +33oC 06h + 23.6oC +26oC ~ +43oC 05h + 35.0oC

44h : U-TOC write data write disabled/read check error 52h : SD write data write disabled 71h : Pickup position initialization time-over 72h : EEPROM data read check sum error 73h : Record head drive disabled (by EJECT lever) 82h : Power overvoltage detection 91h : Ambient temperature is higher that the allowable temperature.

MD-MT821/W

– 16 –

EEPROM DATA LIST (EEPROM version d)

TEMP setting

Item display Set values

T M _ _ Calculate values

ADJ. SET setting

Item display Set values

C O K _ A 0 H F A T _ C 0 H T A T _ 3 E H C A T _ 2 0 H F A B _ E 0 H

BASS setting

Item display Set values

B S 1 _ 0 0 H B S 2 _ 2 D H B S 3 _ 4 B H

Sled setting

Item display Set values

S L G _ 8 D H S L 2 _ 2 0 H S L M _ 6 F H S L V _ 8 7 H S K k _ 4 8 H S K t _ 4 8 H S K m _ 4 D H W T m _ 2 4 H M V 1 _ 4 A H M V 2 _ A A H S R V _ 0 0 H

EQ. SET setting

Item display Set values

H Q 1 _ 9 0 H H Q 2 _ 9 0 H H S G _ 1 1 H H S O _ F D H L Q 1 _ 9 0 H L Q 2 _ 9 0 H L S G _ 1 1 H L S O _ 0 0 H G Q 1 _ 9 8 H G Q 2 _ 8 4 H G S G _ 1 1 H F L p _ 0 9 H

Control setting

Item display Set values

C T 0 _ 0 3 H C T 1 _ 1 1 H C T 2 _ 4 0 H C T 3 _ 3 0 H R C 0 _ C 0 H R C 1 _ F E H S Y C _ A 6 H P W C _ 1 2 H P W L _ 2 6 H D R 1 _ 0 9 H D R 2 _ 8 5 H I N 1 _ 5 4 H I N 2 _ 9 D H I N H _ 6 4 H D R H _ 7 4 H P L E _ 9 6 H R C E _ 9 4 H E L T _ 7 0 H S L T _ 4 4 H S P M _ 0 0 H M S L _ 0 0 H U S 0 _ 0 0 H U S 1 _ 0 0 H U S 2 _ 0 0 H

Item display Set values

F G _ _ 6 3 H F F 1 _ 7 0 H F F 2 _ E 8 H F Z H _ E D H F L n _ 0 A H D J G _ 1 4 H F L V _ 2 0 H W T f _ 2 0 H F S S _ A A H

Fucus setting

Tracking setting

Item display Set values

T G _ _ 2 6 H T F 1 _ 7 0 H T F 2 _ E 0 H T F S _ 0 0 H T B o _ 2 B H T B t _ 1 4 H T K o _ 2 B H T K t _ 1 2 H T D o _ 6 7 H T D t _ 3 4 H T G R _ 0 0 H S C t _ 4 0 H S C m _ 5 3 H C L p _ 1 8 H C L r _ 2 8 H J P I _ 0 0 H K 1 0 _ 6 5 H

Item display Set values

S P G _ 1 4 H S P i _ A A H S P m _ 7 9 H S P o _ 4 F H S P 1 _ 1 0 H S P 2 _ 6 0 H S P 3 _ F 2 H S P 4 _ F 2 H S P 5 _ 1 0 H S P D _ 4 8 H S P K _ 6 B H

Spindle setting

+ 36 hidden pages

Sharp MD-MT821(GL), MD-MT821WBL, MD-MT821WGL Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual